SQL Server “materializes” the data in the view into physical table so instead of doing complex joins, aggregates, etc, it can queries the data from
so,. let close it with MS web site words Creating a unique clustered index on a view improves query performance because the view is stored in the database in the same way a table with a clustered index is stored. The query optimizer may use indexed views to speed up the query execution...
Equijoin subsumption test 可以通过 column equivalence classes 解决:view 中相等的列在 query 中也必须相等(but not vice versa);在满足上述要求的条件下可以算出 compensating column equality constraints,如果 view 的 equivalence classes 在query 中归属于同一个 class,那么需要构建 compensating predicates: for 。
create materialized view V1 with(distribution=hash(a)) as select a, b from dbo.t group by a, b; -- Clear all cache. DBCC DROPCLEANBUFFERS; DBCC freeproccache; -- Check the estimated execution plan in SQL Server Management Studio. It shows the SELECT q...
SqlServer.Management.DatabaseMaintenance 程序集: Microsoft.SqlServer.MaintenancePlanTasks.dll C# 复制 public static bool IsMaterializedView (Microsoft.SqlServer.Management.Smo.View view); 参数 view View 返回 Boolean 适用于 产品版本 SQL Server .NET SDK 2016 本文内容 定义 适用...
Package: Microsoft.SqlServer.SqlManagementObjects v160.2004021.0 C# 複製 [Microsoft.SqlServer.Management.Sdk.Sfc.Metadata.SfcProperty] public Microsoft.SqlServer.Management.Smo.DwViewDistributionType DwMaterializedViewDistribution { get; set; } Property Value DwViewDistr...
Abstract DynaMat: A Dynamic View Management System for Data Warehouses Data Warehouses - Kotidis, Roussopoulos - 1999 () Citation Context ...ented in thisspaper are the foundation of a robust physical databasesdesign tool for Microsoft SQL Server 2000 that cansrecommend both indexes and materi...
Transact-SQL 语法约定语法syntaxsql 复制 ALTER MATERIALIZED VIEW [ schema_name . ] view_name { REBUILD | DISABLE } [;] 备注 Azure Synapse Analytics 中的无服务器 SQL 池不支持此语法。参数schema_name 视图所属架构的名称。view_name 是要更改的具体化视图。
This is where materialized views can help. A table created on top of the base table to give a different view is called materialized view. This view allows the same information in the base table to be queried using a different key or keys. ...
To create a materialized viewin your own schema: You must have been granted theCREATEMATERIALIZEDVIEWsystem privilegeand either theCREATETABLEorCREATEANYTABLEsystem privilege. You must also have access to any master tables of the materialized view that you do not own, either through aSELECTobject pr...